Mtgox.com

Mtgox or Mt. Gox was one of the first websites where bitcoin could be exchanged for regular government issued money like US dollars. In 2014, Mt. Gox closed after roughly 850,000 bitcoin was declared lost or stolen. Mt. Gox was created in 2006 by Jed McCaleb who named it after Magic: The Gathering Online Exchange where users could cards like stocks. Jed later sold Mt. Gox to Mark Karpelès in 2011.